John sidney williams and sidney preston williams



June 2. 1928.

J. S. WILLIAMS ET AL CASEMENT WINDOW FASTENER AND THE LIKE.

Filed y 1927 51m: EY PREQTQN WILLIAMS INVENTOFLS B5 QAAJA TTY.

Patented June 12, 1928.

UNITED STATES PATENT OFFICE.

J OHN SIDNEY WILLIAMS AND SIDNEY PRESTON WILLIAMS, OF BRISBANE,QUEENSLAND, AUSTRALIA.

CASEMENT-WINDOW FASTENER AND THE LIKE.

Application filed July 6,

This invention relates to fasteners of hinged structures such ascasement windows, the fasteners being of the two plate type, one platebeing adapted to be secured to the structure and therefore movable withit, and

the other plate being securable to an adjacen't support, such as thewindow sill, there being means to hold the movable window plate in anyof several positions according to the adjustment of the window desired.Existing fasteners of the type stated so far as known toushavedisadvantages, and one object of this invention is to provide fastenerswhich are easy to instal a place where it there is in a right angledarea or corner without recessing the framing near the window. Anotherobject is to provide that a pawl carried by the window plate shallengage a selected part either of the fixed plate or of a member'hereincalled an arm, which is attached to the fixed plate, and which whenrequired becomes'an extension in continua- -ti0n of the fixed plate, sothat when the pawl is not in a position to engage the fixedsill uplate,it will still be able to engage the ex tended arm and hold the windowmore fully -open than if the extension were absent. The

sill plate has, for a. utility hereinafter stated,

means by which its front is located with a. 80' space between it and thesill.

The applicability of the fixed plate in a right angled corner with thewindow pivotal line about on the same plane as the surface of apartition extending well inward from the window for example is due tothe presence of the extension arm, the window being widely openable. Ifit be not desired to be able to openthe window so widely, the extensionarm is omittable.

I In the drawings herewith, Figure 1 is a plan of an embodiment of thisinvention applied to a window shown widely open.

Figure 2 is similar to Figure l, but with the window shown closed.

Figure 3 is a front elevation of the parts in Figure -1. i

1 Figure 4 shows in section parts which carry the pawl pivot, enlarged;on line F of Fi re 2.

igure 5 is a plan of the fastener modi- .fied, the window being lesswidely open.

Figure 6 is similar to Figure 5, except that it shows the window closed.

The hinged structure, shown by a window W, is hinged to a frame F whichat its base 1927. Serial No. 203,701.

has a sill S. S denotes the surface of a wall, partition, or fairly deeprecess of the window frame. 1 is a window plate,of skeleton andapproximately triangular form, fixed in horizontal position to thewindow fixing screws 1 being shown extending through suitable parts,shown lugs 1 2 is a sill plate of'skeleton and approximately triangularform lixedwith its front spaced over an adjacent suport, herein calledthe sill, for which purpose it has feet 2, at its base, one foot at eachangle being preferably provided and screwedldown, the effect being thatunder a rail 4which forms the sill plate a front edge space is left.

Each plate 1 and 2 has a front rail, 3 or 4 respectively, the windowplate rail 3 being above and coinciding withrail 4 or substantially sowhen the fastening is closed. Rail 3 may rest on rail 4, and it isglidable above it.

Each rail is curved and the curves have, as a centre, the axis of thewindow hinge H,

;so that the rails continue to coincide but to a decreasing extent whilethe window is be ing'opened, until a point is reached when the windowrail has moved quite past the sill rail. The window plate rail 3 has alug 3 which when the window is closed or sufficiently so, overhangs thefront edge of the sill rail 4. This lug carries a pawl 5 and tofacilitate this, a boss 3? is provided on the lug. The boss is aperturedto receive the pawl pivot pin 5, and the aperture interior 3 isdimensioned to house part of a suitable spring 5, ends of which areindicated in dotted lines at 5, Figure 1. The pawl 5 has a tooth 6 whichis so urged by the spring that the tooth end bears on the sill rail 4and normally engages one of a series of recesses therein, shown asnotches, 4 4, the rail end 4 being also adapted for tooth engagement'tohold the window fastened in closed position.

The building may have awall, framing or partition surface S at rightangles to the closed windowyso that there is not space for the rail end3 to be moved inwardly beyond that wall or like surface when the windowis closed, see Figures 4 and 5.

Therefore the length of the rail 3 having the end 3 is limited in thisinvention accordingly, although the rails of certain prior fastenershave not that limitation. The right angled corner area shown in thedrawings is boundedby the window and by the adjacent training S, and isover the sill end. The extremity 3 of rail end 3*, does not extendsy'sae surface- S;

An arm 7, pivoted to rail 4 is'prtwideldas shown in Figures 1 to 3.This. arm moves on its pivot 7 froi'ri'itsnormal closed posi-.swin'lginwardlyg to the position of Figure 2. This extension mer'nberis recessed to receive thepawl' tooth end, notches being shown in itsedge, at, 95 and 4;", v p

l/Vhenitengages the end l,tootlrtlIztastens the window. inclosedposition; by (511- gaging any recesses 4 it or 4, it holds the windowpartly open; and by engaging recess es it holds the window very widelyopen.

'lhe lengthof the extension arm is not necessarily limited tothatillustrated. g

The 'extension arm is formed with a; stop 10 shown on its underside andwhen the window widely opened the pawl extended end 6*. p wl i t 6 i arrte y h s p which then prevents excessive opening of e i ewc In Fi u t sre Pr onthe sill plate and is shown at onthe underside thereof, as analternative to Finger lugs 8, 9 progecttrom rail 3 and pawl5:respectively-, ant are normally spaced a short distance apart by theinfluence of the pawl spring 5'. The extended end 6"v of toothfiheingbelow the rail 4 prevents rail 3 lifting froin its normal positionclose aboyerailfl.

Ex r in thisipair of lugs together, h

twe'en a finger and thurnhfor example, the

pawltooth 6 is detached from any recess it engages, andt he operator,while still gripping the lugs together, pushes thern in'any direction hewishes andthus pushes the window to any position he desires.v 'When thatposition is reached he releases the lugs, al-

lowingthe pawl tooth to spring. an adjacent recess and hold. the windowfirmly.

.An extension arrn canbe dispensed "with as in Figures 5 and 6. ifwithout'such arm,

thewindow opens sufficiently wide for use;

in these figures the triangular plates have each an acute angle oppositethe curved rail. Such an" angle is useful only occasionally t-hat iswhen itis desirable to further economize the space thefestenin'g'occupies.

When the window plate has been :fitted, its position enables the sillplate to be easily and correctly located, sothat when-gum windowisclosed the front rails of th e plates will substantially coincide andso that the sill plate will prevent sagging ot the window relatively toits hinge H.

1. Ina" fastening for a'hinged structure,

two plates one tobe fixed to said structure,

the other to be fiX e d to an adjacent support, a pivoted pawlononeplate and onthe other P W ss b en a by. ee e pauhth latter plateuppo i g a rii e e lexte ion aim r s e o s mi 'i' n a e ent Sa d armshifting into eirte idedposition conun anon or its. arrestin r il ycrnifi the ing d s n tum yend a plfedete i i ed extent, and shifting intoclosed position. by closing the said structure.

.ll Lt. 2. The construction in cla1 rn 1,but wher-.

in each plate has a curved tron t raihthe rails is closed, theicurveshaving the same axis, one rail beingjrecessedior pawlengag'e" h t, theother rail "pawl, pivoteddoit with springmieans to ust said en agement.Y 1 i vThe construction in claiin 1,1b1it1wHeieinidu'ring window openinthe paiivl'stiilie's i the extension aim andshi tsit into elitehded 4The combination with awiiiddw pos mhaving a curved "nest railcarry'iii a1 urged 'paw'l, of a sill "late tats Tfizielilto an adjacent su pei eand having" a pulsed teens, rail 610st to'andtelq'wy the windowplatemil, an exteasipnj arm pivoted u) the sill plate, recesses in the/sillplate rail the] said are m "be engaged'by the pew i a 5 finger lug 0nthe windoiw plate rattan fa finger lug on the pawl, uiiugs'beiugflaaapaed to beheld pressed tog nests free the pawl, and'whle" '50 held pushed,in any directio by which to move thewindow, said shitting when struckandpushed; either by tliGiPiLWlOl window} i y 5. A sill platehavingaffront'curvediecessed rail having p, pivoted to it a. recessedeirteiision arin adaptedito b'e swung into-ex- .tended or closedposition, in winnings-(m with awindow plate having a curved front railhaving a finger lug and'also a projettin lug carrying aspi-ingerg-"ed'pawl havinga finger lug, and having atoo'thed projectionfor recess engagement. g g

6.- The construction "as clainie d" in eleijn 1, in which each plate hasa curvedjtrontrail and the fixed plate is providedwithnnder projectionsto locate its front rail'and" its extension arm over a space which isover 1 the support of saidprojectionsand the pivoted pawl having. anextension which "enters. and is movable along the said space;

7. In combination with akhinged st i'l lc-n ture and an adj acent wallformingtherewith an angular area, an upperplatefixed said 1substantially coinciding 1 when structure, and a lower plate fixed to anadjacent support, the area of each plate being less than that of theangular area, a corner at the inner end of the lower plate being locatedat a distance from the Wall, the lower plate carr ing a pivotedextension arm adapted to be swung into open position beyond the fixedlower plate by the movement of a pawl on the upper plate beyond saidfixed plate, the pawl being adapted to engage the said inner corner ofthe lower plate between it and the wall to hold the said hingedstruoture'in closed position, the pawl being adapted to engage one of aseries of notches in the lower plate, or in the 15 JOHN SIDNEY WILLIAMS.SIDNEY PRESTON WILLIAMS.

